CVE-2026-9641mediumCWE-916

CVE-2026-9641: medium-severity vulnerability in ARODLAND Crypt::PBKDF2

Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations

Published · Updated

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.3epss 0.3%
exploitation probability
0.3%top 81% of all CVEs
observed exploitation
nono source reports it
Crypt::PBKDF2 versions before 0.261630 for Perl have a weak default algorithm and number of iterations. The default algorithm is HMAC-SHA1, which should only be used for legacy systems. These versions default to using 1000 iterations. Depending on the chosen algorithm, 220,000 to 1,400,000 iterations should be used.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
ARODLAND · Crypt::PBKDF2
Related CVEs — ARODLAND Crypt::PBKDF2

In the same product, most dangerous first.

CVE-2026-9638HIGHCrypt::PBKDF2 versions before 0.261630 for Perl generate insecure random values for saltsEPSS 0.5%CVE-2017-20240MEDIUMCrypt::PBKDF2 versions before 0.261630 for Perl are vulnerable to timing attacksEPSS 0.3%
References
https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#pbkdf2https://metacpan.org/release/ARODLAND/Crypt-PBKDF2-0.261630/changeshttp://www.openwall.com/lists/oss-security/2026/06/12/5http://www.openwall.com/lists/oss-security/2026/06/13/1http://www.openwall.com/lists/oss-security/2026/06/14/1http://www.openwall.com/lists/oss-security/2026/06/14/2http://www.openwall.com/lists/oss-security/2026/06/14/3